-void __lock(volatile int *) ATTR_LIBC_VISIBILITY;
-void __unlock(volatile int *) ATTR_LIBC_VISIBILITY;
-int __lockfile(FILE *) ATTR_LIBC_VISIBILITY;
-void __unlockfile(FILE *) ATTR_LIBC_VISIBILITY;
-#define LOCK(x) (libc.threads_minus_1 ? (__lock(x),1) : ((void)(x),1))
-#define UNLOCK(x) (libc.threads_minus_1 ? (__unlock(x),1) : ((void)(x),1))
-
-void __synccall(void (*)(void *), void *);
-int __setxid(int, int, int, int);
-
-extern char **__environ;
-
-#undef weak_alias
-#define weak_alias(old, new) \
- extern __typeof(old) new __attribute__((weak, alias(#old)))
-
-#undef LFS64_2
-#define LFS64_2(x, y) weak_alias(x, y)
+hidden void __lock(volatile int *);
+hidden void __unlock(volatile int *);
+#define LOCK(x) __lock(x)
+#define UNLOCK(x) __unlock(x)